Apparatus for making blanks for envelopes or paper bags



June 6,1933. M. JoAcl-umc zYK' v 1,913,119"

APPARATUS FOR MAKING BLANKS FOR ENVELOPES ORPAPER BAGS Filed March 1'7,1930 5 Sheets-Sheet 1 June 1933- I mrJoAcl-nmczYK. 1,913,119

APPARATUS FOR MAKING BLANKS FOR ENVELOFES OR PAPER BAGS Filed March 17.1930 5 sheets-sheet 2 June 6, 1933. M. JOACHIMCZYK 1,913,119

APPARATUS FOR MAKING BLANKS FOR ENVELOPES OH PAPER BAGS Filed March 17,1930 5 Sheets-Sheet 3 I 1 JA/ 40x 4? Egg 3 n Iune 6, 1 933. 7 M.JOACHIMCZYK 1,913,119 APPARATUS FOR MAKING BLANKS on ENVELOPE-S 0a PAPERBAGS Filed March 17 1930 5 Sheets-Sheet. 5

WINYENTOR M.Joac )1 1m c yk v Patented June 6,

l pmreosrarrs. PATENT; OFF-ICE V :oacnmczrx, or mannr-cmnnorrnnnune,enaum Y mm'rusroamxme BLAN'KS-IOB- mrvnnorns or. PAPER BAGS Applicationfled larch 17, 1980, Serial No. 438,441, and in Germany May 10, 1929.

The object of the apparatus according to the invention is, primarilyfiocarry out automatipally, quickly and rehably the processes which in theknown machines for making en velopesfnamely cutting the blanks 'toshape, I

H made.

s ould be as close as possible together withproduced in which the blanksdrawn from 2 out any overlapping, which would produce faulty stampingsand consequently increased waste of paper. But even with the mostcareful operation, the waste of paper is relatively large, because largewaste pieces unavoidably occur at-the margin of the sheets. There isalso another very inconvenient drawback in the usual method of workingwith punches, since the cut sheets are of unequal size, those in theupper layers being lar er than those in the lower layers. This ma es thefurther'preparation of sheets in the folding machines more diflicult,and requires more supervision and. adjustment by the operator, so "thaton that account the whole working process can be hardly effectedmechanically.

According to the invention, these difliculties are obviated by astamping device in which the usual surface, usually made of hard wood,cardboard, bronze or the liketo receive the blade of the punch, isreplaced by an apertured lower blade which allows the upper blade topass through it and accordingly shears the material, so that the edgesare not damaged and the contour lines are always uniform and sharplyoutlined.

In this stamping apparatus, certain parts I ofthe web or webs arepressed through the aperture of the lower knife viz. the blanksthemselves, if they are .to be used, for the manufacture of theenvelopes usual in America, or, on the other hand, the waste or'superfluous-pieces of the paper webs lying between the contours of twoblanks, if envelopes of the so-called cross seam type are to be Bythelatter arrangement the important advantage is obtained that the cutsheet or sheets can remain on the work table of the stampin device andfrom there can be delivered y very simple means to a pile app'aratus; ifthe cut sheets themselves are pressed through the opening'of the lowermife, guiding and feeding means are necessary, which should .becarefully adapted in view of the very small weight of the sheets" andtheir very small rigidity, in order to avoid faults.

An automatic apparatus is consequently reels "of pa er, preferably inseveral superimposed we s, for envelopes or the like, can be constantlyworked, exactly cut with the leastwaste and arranged ,in' piles. Sincefolding machines, with or without devices for gumming the flaps, are ingeneral use, the 1 new stamping apparatus effectively completes thesemachines.

In order to increase the output of the stamping device and at the sametime to lessen still further the amount of paper wasted, it is advisableto "work with wide webs and to construct the stamping apparatus so thatat each stroke severalblanks lying beside one another, or, however, thewaste pieces between these blanks, are out out. The particular shape ofthe blanks enables the width of the web to be less than would berepresented by the total width of two or more webs required for cuttingthe blanks out of separate webs for single rows of blanks.

Further details of the subject matter of the invention will be given inthe following description of two examples which are diagrammaticallyrepresented in the accompanying drawings.

Fig. 1 is a side view of the machine.-

Fig. 2 is a verticalfsection through the stamping device of Fig. 1.

Fig. 3 is a section on the line G-D of Fig. 2.

Fig. 4 is a front view of the tension regulator of Fig. 1.

5 Fig. 5 is a plan of a web for two sets of ad- ]acent blanks.

Fig. 6 is a side view of the stampin and piliing device for a webaccording to ig. 5, an Fig. 7 is a plan of the parts shown in Fig. 6.

ig. 8 is a plan of two sets of adjacent blanks and the end of the uncutweb.

Fig. 9 is a front view of the stamping device and Fig. 10 is a plan ofthe same. Fi 11 is a side view of the eccentric drivt estamping device.

ig. 12 is a side view of the step by step 2 feed rolls.

Fig. 13 is a front view therefrom. Figs. 14 and 15 illustrate twodifferent positions of the step by step rolls.

Fig. 16 is a side view of the tensioning ap- 2 paratus, from which Fig.17 is a front view. In the machine illustrated in Fig. 1, two paperreels 1 and 1a are shown from which the webs 2 and 2a are led overguiding rollers 3 and 3a, to intaglio printing devices 4 and 4a, wherethey receive first an appropriate impression. The employment of intaglioprinting devices has the advantage that the rinting rollers serve at thesame time as 85 fee ing devices for the web. In this way there is noneed for separate feedin rollers and at the same time a very exact feewhich keeps the paper webs in register, is also obtained.

The webs then pass over guiding rollers 5 and 6 to rollers 7 and 7a of atension regulator 8, of which the object and working will be explainedlater.

The webs are now combined together or superimposed between the rollers 9and 10 and pass over a pair of feed rollers 11, 12. Both these rollersrun continuously and uniformly, but have, however, recesses on theirperimeter which partly overlap and feed the 60 web step by step. Theposition of the rollers 11 and 12 is relatively adjustable so that theduration of the interruption of the feed, which is necessary for exactlyeffecting the cut, can be adjusted as required. Two extreme positionsare shown by Fi 14 and 15, the first showing the position 0 the rollswhen the motion of the web shall be arrested the shortest time possible,whereas the position of the rolls as shown by Fig.- 15 enables to extendthe duration of the stopping to the greatest extent. The step by steprolls are continuously driven by conical gears 48, 49 and two toothedgears 50, 51 fast on the axles of the two rolls and engagin one another.The cutting itself is effected by the stamping gear 42 actuated by meansof two rods 16 operated by an eccentric strap 14 rotated by a shaft 15.

The same eccentric serves also for the periodic actuation of the tensioncontroller 17, 18, 19, 20 and the tension controller 21, 22, 8, which bya corresponding downward movement takes up the loop formed in the webduring the stationary period in the feed of the roller pair 11, 12, sothat the web is always uniformly tensioned.

The stamping device itself, which is shown more fully in Fig. 3,consists of a head portion 23 with a blade 24 which passes through acorresponding aperture in the lower blade 25. The contour lines of theupper and lower blade are so formed that only the waste portion of webis cut out and is removed through the opening 26, as will be explainedlater with reference to Fig. 5. The prepared blanks are led by twoconveyer bands 27 and 28 to the pile box 29 which has aslot at its lowerfront end. Wheels 30 guide the lowest sheets to a tape 31 which leadsthem to a position 32 for gumming the closing flaps, and then, for thepurpose of drying, on a path which encircles the whole machine. Theprepared, imprinted, gummed and dried blanks are finally led to acollecting box 33.

The distribution of the contour lines of each of two blanks lying besideone another of web of greater width is shown in Fig. 5. At each strokeof the stamping device a waste piece 37 is cut out, leaving two cutblanks 35 and 36.

The web can be less by the piece 37 than twice the width of a web havinga single row of blanks to be cut.

The method of feeding the cut blanks accordin to Fig. 1 is not the mostpreferable with t e web shown in Fig. 5, because the paths of theseparate blanks would partly overlap. An improved arrangement, as shownin Figs. 6 and 7, is preferably provided with reciprocating grippers 38,39 which each seize the blanks lying on the table of the stamping device42, or a layer of such blanks, and either directly form them into apile, as represented in the drawings, or conveyer hands lead them forfurther preparation, as shown in Fig. 1, from the place beyond whichthere is no danger of any relative displacement of the position of theblanks.

The grippers are operated by a shaft 40 and eccentrics 41. Othereccentrics 43 are arranged on the same shaft which actuates the stampingapparatus 42 and the pile-adjusting devices 44 are also operated fromthe same shaft.

The adjusting devices 44 push the separate sheets against stop 45. Thetable 46 on which the pile rests is hung on chains 47, so that t can belowered, automatically, if

'- necessary,

as the height of the pile increases. I claim: v 1. In an-apparatus formaking blanks for further working into rectangular envelopes withtriangular flaps disposed about its four sides, a plurality of paperreels, means for drawingqofi the paper webs continuously from saidreels, astamping device having cutters and cobperating with means fordelivering I the blanks to 'a pile, means for superimposing and feedingthe superim posed webs under tension in a step by step motion to thestamping device, the cutters of said device operating at right angles tothe web and being arranged so that two adjacent cut-pieces of each .ofthe superimposed webs are simultaneously severed at the same time, theoutlines of which fit in one an-' other at three sides, whereas a fourthside corresponds with an outside edge of the web;

2. In an apparatus for making blanks for further working intorectangular envelopes with triangular flaps disposed about its foursides a plurality of paper reels, me'ans for 1 drawing the paper webscontinuously from said reels, a tension controller having rollers fortensioning and other rollers for super- I imposing the webs, saidlever-actuated tension controller being so controlled, that the rollersmounted thereon release for a short time the webs for lateral adjustmentat the beginning of its periodic feed, intermittentrecesses, a stampingdevice with blades operating at right angles to the web, said bladesbeing arranged in such a manner that two adjacent cut-pieces of each ofthe superimposed webs are simultaneously severed-at the same time, theoutlines of which fit in one another at three sides, whereas .a fourthside correspondswith an outside edge of the web,

oscillating grippers for feeding further a layer of blanks, said ipperscooperating With pile adjusters and ing operated by excentrics, that aremounted on the same shaft as the excentrics which operate the tensioncontroller-, the pile adjusters and the stamping device. 1

In testimony whereof I afiix my signature.

MARTIN J OACHIMCZYK.

